diff --git a/external-crates/move/crates/move-cli/src/base/new.rs b/external-crates/move/crates/move-cli/src/base/new.rs
index ffa8d5ac75f68..885e86caff197 100644
--- a/external-crates/move/crates/move-cli/src/base/new.rs
+++ b/external-crates/move/crates/move-cli/src/base/new.rs
@@ -51,7 +51,10 @@ impl New {
         let Self { name } = self;
 
         if !Identifier::is_valid(&name) {
-            return Err(anyhow!("invalid package name, not a valid Move identifier"));
+            return Err(anyhow!(
+                "invalid package name, please use lowercase letters, numbers, and underscores, \
+should start with a lowercase letter."
+            ));
         }
 
         let p: PathBuf;